Chair-lock.



C. S. CILLEY.

CHAIR LOCK.

APPucATmN FILED JULY l. 1914.

1,155,043., Patented sept. 28, 19515;

erraten.

CASSI'U'S S. CILLEY, 0F SALEE, MASSACHUSETTS. v

CHAIR-LOCK.

Lismore.

Specification of Letters Patent.

Patented sept. ee, reis.,

Application ledJuly 1, 1914. i erial N 0. 848,384.

To all whom/,it may concern.'

Be it known that-I, CAssIUs S. CILLEY, a citizen of they United States,residing at Salem, county of Essex, State4 of Massachusetts, haveinvented a certain new and useful Improvement iny Chair-Locks, of whichthe following is a specification, reference be- 'ing had therein to theaccompanying drawy invention has for its object the production of a newand improved furniture locking device which may be employed to securechairs or other furniture firmly to the floor.

The device embodying my invention is particularly adapted for use inpublic halls and auditoriums where sometimes chairs are needed and atother times it is necessary'to,

have the ioor clear and smooth.

My device consists essentially in locking mechanism affixed to ,thechair and a ioor plug inserted in the fioor flush with the surfacethereof so that for dancing or other such uses when the chairs are notin use. The hooked member or locking member of the locking mechanism maybe readily inserted in the floor plug or keeper plate and is so arrangedthat the chair or other piece lof furniture to which itis attached maybe drawn tightly to the floor and thereby fixed rigidly `in position.vrlfhe locking mechanism is so constructed and arranged that when thelocking member is released from the keeper it is automatically liftedabove the `ioor surface and maintained in this position and the chairmay be moved about freely without marring the door.

My device makes it possible to comply with the law requiring that chairsin public halls be fastened down and to do so without a large expensefor labor for it is so constructed that the chairs-may be quickly andeasily locked in place without the use of screws and may be as easilyreleased..

In the drawings, Figure 1 is a view in perspective showing a chairlocked to the'- iioor by a device embodying my invention F ig. 2 is adetail showing the-lowerend of a leg of the chair provided with myimproved locking mechanism. Fig. 3 is a plan view of the Hoor plug. Fig. 4 is a View par the room is not injured.

-abling the chair tially in section showing a chair leg locked to theHoor by my improved device. Fig. 5' is a section on line 5-5 of Fig. 4:.

aving reference to drawings, there is shown at 1l, a folding chairy of atype commonly employed in halls and auditoriums. The leg of the chair isprovided as shown at 2 with my improved lockin mechanism which. is shownlocked to a oor plugy or keeper 23 which is inserted in the Hoor.

The locking memb pin 13 which is loosely mounted in guides 14 carried bya plate 15 which may be of any suitable form, but which is preferablyfiat for .the type of chair shown in Fig'.` 1. It may be readily securedto the chair leg by screws 16 or in some other suitable manner. The pin13 is yieldingly mounted on a spring 17 which is interposed 'between theupper guide 14 yand a handle 18 which is preferably secured to the upperend of the pin in order that it may be readily rotated thereby. Thelower end of the pin is pro vided with wings 19 which extendtransversely to the axis of the pin and are preferably of the form andshape shown forming what is in eiect a double hook onthe pin. -The plate15 is provided with a swinging cam or wedge 20 which is pivoted at 21 asshown, the cam surface of said member being adapted to engage a projec.tion-22 rigidly fixed to the side of the pin 13 for reasons hereinafterto be set forth.

At 23 is shown a keeper or floor plug which consists of a tubular memberhaving a screw threaded exterior 24 and ahead 25. The head 25 isprovided with a slot 26; for the reception ofthe wing or key 19. Thehead 25 at the sides of the slot 26 extends over the tubular interior ofthe door 'plug or socket member and forms a flange portion beneath whichthe the plug makes a pocket for the reception of the winged end of thehook member. rl`he slot 26 provides an opening to the pocket throughwhich the said winged end may be inserted. memberv the wings .willproject into the recess beneath thedange portion thereby ento be heldfirmly on the floor. It will be seen that the keeper 23 may be readilyinserted in the Hoor or other fixed er consists of a rodorv hollow orrecess in By partial rotation of the hook any way.

v each other.'

surface to which it' is desired to attach the chair or other piece offurniture by merely boring a hole in the iXed object and screwing thekeeper into it. The iioor plug has no projections of any sort whichprotrude from its upper surface to mar the room in This is important formy device is particularly adapted to be installed in the floor and doesnot in any way hinder the 'use of the room for various purposes such asdancing or the like., f

When the chair is to be put in place, it is properly positioned and thewing or key 19 is turned to a position parallel with the slot 26 of thefloor plug by means of the handle' 18. The handle 18 attached to the pin13 is then pressed downwardly against the spring 17 until the wings arebelow the cover25 of the floor plug. The handleis then turned so thatthe wings of the pin are at right angles to the slot and the wings thusengage the head and lock the members together. -The spring pulls theflanges up against the head. In order to lock the members positivelyto-l gether the swinging cam 20 is then swung beneath the projection 22on the pin. This causes the wings of the pin to be pressed against thehead 25 thereby drawing the chair down to the licor and securing itrigidly .in position. The swinging cam or wedge .20 may be provided withnotches 27 as shown which engage the projection 22 and hold the parts inplace. To release the chair, it is simply necessary to swing the cam orwedge from beneath the projection 22 and then turn the key until thewings are parallel with the slot. The spring will thereupon snap the.key up out of the way and the chair may be removed and moved aboutwithout scratching the floor.

It will be seen from the above that by my i improved device chairs orother furniture may be readily locked in place in .such a manner thatthey arepositively and rigidly fixed..

What 1 claim is:

' 1. A device for securing a piece of furniture to the floor comprisinga composed of a plate there being a recess beneath an edge of the plateand an opening adjacent said edge, a hook member mov-ably mounted on thepiece of furniture and adapted to pass through said opening into saidrecess and engage the under sid'eof said -edge of the plate, movablemeans to draw the hook member and floor member forcibly together when inengagement with each other and a spring acting upon the hookto raise itabove tbe Ylicor when the book nember and door member are disengagedfrom 2. A device for securing a piece of fui-nb ture to the 'loorcomprlsing a member secured to the floor therebemg a recess besocketmember, and

Hoor member neath an edge of the plate and an opening adjacent saidedge, a hook member slidably and rotatably mounted on the piece offurniture, saidV member being movable downward through the opening intothe recess adjacent the edge of the plate and rotatable to engage theunder side of said edge of the plate and when disengaged therefrom beingmovable up out of contact with the floor, and a swinging cam adapted toengage said hook member when said hook member and loor member are inengagement with each other whereby said two members may be drawn intotightened relation with each other.,

3. A device for securing a piece of furniture to the floor comprising asocket member inserted in the floor tion, a head consisting of a pair ofinwardly extending flange portions with a slot therebetween, above saidrecess portion, a hook member having a winged end, a support on thepiece of furniture on which said hook member is slidably and rotatablymounted, said hook member being movable downward to enable the saidwinged end to be inserted through the slot into the recess in the saidrotatable to cause the said winged end to engage with the head at thesides of the slot after it has entered said recess and when disengagedfrom said head being movable out lof Contact with the floor, a spring tohold said hook member normally in a position out of contact with thefloor, and a cam engaging said hook member whereby when the hook memberand socket member are in engagement with each other the said two membersmay tightened relation to each other.

it. A furniture lockin device comprising a supporting member a apted tobe secured to furniture, a locking member slidably and rotatably mountedin said supporting mem ber, a Wing carried by said locking member, ahollow door plug adapted to be secured to the floor, said door plughaving a pair of inwardly extending flanges with a slot therebetween,the mounting of said locking member being such as to permit the saidwing to be moved relatively to the piece of furniture into a position toengage the floor' plug and to be rotated to engage the same, and aswinging cam engaging said locking member and operating to draw it awayfrom said door plug so as to tix said parts in rigid position whenlocked.

5.` A furniture locking device comprising a supporting member adapted tobe secured to a chair leg, a locking member slidably and rotatablymounted in said supporting member, a wing carried by said lockingmember, a hollow floor plug adapted to be secured to the floor and tolie Hush with its surface, said floor plug having a pair of inbe drawninto wai'aly extending Hanges with a slot there- 'between for thereception of said Wing by which the chair is secured to the Hoor, aspring to hold said locking member normally in a position out of Contactwith the H001', and a cam engaging said locking member and securing itagainst rotationv by which the Vchair leg may be` positively drawn tothe floor and rigidly held in Aposition thereon.

In testimon whereof I aiiix my signature, in presence o two witnesses.-

CASSIUS S. CHJLEY. Witnesses:

GEORGE P. Dum, Amon H. MORRISON.

